dude, if you leave a coreshot open, you're gonna force moisture into your core. That'll result in either the core getting really soft and rotting, or another big chunk getting ripped out when you run over another rock.
Moisture in the base can also cause delams given enough time. Get it fixed as soon as you can. Super glue will help, but it's not a terribly good fix. It hardens too so it tends to chip out fairly easily.